Adjective: noble-minded 'now-bul 'mIn-did
- Characterized by pursuit of high or noble principles and goals, often impractically
"Noble-minded efforts to help others";
- high-minded, idealistic
See also: elevated, exalted, grand, high-flown, lofty, quixotic, rarefied, rarified, romantic, starry-eyed, sublime, utopian, visionary, wild-eyed